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# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com> # # This file is part of Ansible # # Ansible is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # Ansible is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Ansible. If not, see <http://www.gnu.org/licenses/>. # Make coding more python3-ish from __future__ import (absolute_import, division, print_function) __metaclass__ = type import os from ansible import constants as C from ansible.errors import AnsibleParserError from ansible.module_utils._text import to_text, to_native from ansible.playbook.play import Play from ansible.playbook.playbook_include import PlaybookInclude from ansible.plugins.loader import add_all_plugin_dirs from ansible.utils.display import Display from ansible.utils.path import unfrackpath display = Display() __all__ = ['Playbook'] class Playbook: def __init__(self, loader): # Entries in the datastructure of a playbook may # be either a play or an include statement self._entries = [] self._basedir = to_text(os.getcwd(), errors='surrogate_or_strict') self._loader = loader self._file_name = None @staticmethod def load(file_name, variable_manager=None, loader=None): pb = Playbook(loader=loader) pb._load_playbook_data(file_name=file_name, variable_manager=variable_manager) return pb def _load_playbook_data(self, file_name, variable_manager, vars=None): if os.path.isabs(file_name): self._basedir = os.path.dirname(file_name) else: self._basedir = os.path.normpath(os.path.join(self._basedir, os.path.dirname(file_name))) # set the loaders basedir cur_basedir = self._loader.get_basedir() self._loader.set_basedir(self._basedir) add_all_plugin_dirs(self._basedir) self._file_name = file_name try: ds = self._loader.load_from_file(os.path.basename(file_name)) except UnicodeDecodeError as e: raise AnsibleParserError("Could not read playbook (%s) due to encoding issues: %s" % (file_name, to_native(e))) # check for errors and restore the basedir in case this error is caught and handled if ds is None: self._loader.set_basedir(cur_basedir) raise AnsibleParserError("Empty playbook, nothing to do: %s" % unfrackpath(file_name), obj=ds) elif not isinstance(ds, list): self._loader.set_basedir(cur_basedir) raise AnsibleParserError("A playbook must be a list of plays, got a %s instead: %s" % (type(ds), unfrackpath(file_name)), obj=ds) elif not ds: self._loader.set_basedir(cur_basedir) raise AnsibleParserError("A playbook must contain at least one play: %s" % unfrackpath(file_name)) # Parse the playbook entries. For plays, we simply parse them # using the Play() object, and includes are parsed using the # PlaybookInclude() object for entry in ds: if not isinstance(entry, dict): # restore the basedir in case this error is caught and handled self._loader.set_basedir(cur_basedir) raise AnsibleParserError("playbook entries must be either valid plays or 'import_playbook' statements", obj=entry) if any(action in entry for action in C._ACTION_IMPORT_PLAYBOOK): pb = PlaybookInclude.load(entry, basedir=self._basedir, variable_manager=variable_manager, loader=self._loader) if pb is not None: self._entries.extend(pb._entries) else: which = entry for k in C._ACTION_IMPORT_PLAYBOOK: if k in entry: which = entry[k] break display.display("skipping playbook '%s' due to conditional test failure" % which, color=C.COLOR_SKIP) else: entry_obj = Play.load(entry, variable_manager=variable_manager, loader=self._loader, vars=vars) self._entries.append(entry_obj) # we're done, so restore the old basedir in the loader self._loader.set_basedir(cur_basedir) def get_loader(self): return self._loader def get_plays(self): return self._entries[:]